Abstract

Tachysurus wuyueensis, new species, is described from the Qiantang-Jiang Basin, situated in Suichang County, Zhejiang Province and Xiuning County, Anhui Province, southeast China. The coastal basin drains into the East China Sea. The new species belongs to the T. pratti-T. truncatus group within the genus Tachysurus defined by having a smooth anterior margin of the pectoral-fin spine, short maxillary barbels not extending beyond the base of the pectoral-fin spine, short dorsal spine not exceeding two thirds of head length and an emarginated caudal fin. This new species is distinct from all other species of this group, Tachysurus pratti (Gunther, 1892), T. truncatus (Regan 1913), T. gracilis (Li, Chen & Chan, 2005) and T. brachyrhabdion (Cheng, Ishihara & Zhang, 2008), in having a shorter prepelvic body (length 40.0–46.4% of SL vs. 45.8–54.8%). It further differs from T. pratti, T. truncatus and T. gracilis in having more vertebrae (45–47 vs. 37–44) and more anal fin rays (21–25 vs. 14–20), from T. brachyrhabdion in having a more slender body (depth 10.1–13.5% of HL vs. 13.1–17.6%). Molecular phylogeny, based on the mitochondrial cytochrome b (cyt. b) gene confirms the validity of T. wuyueensis and the T. pratti-T. truncatus group. Furthermore, this study addresses the diagnostic traits distinguishing the T. pratti-T. truncatus group from the T. tenuis-T. crassilabris group which have historically been treated as a single species group due to morphological similarities.

Addeddate

2024-09-17 02:06:27

Bhl_virtual_titleid

165999

Bhl_virtual_volume

v.100:no.2 (2024)

Call number

10_3897_zse_100_120676

Call-number

10_3897_zse_100_120676

Foldoutcount

0

Genre

article

Identifier

tachysuruswuyue100zhou

Identifier-ark

ark:/13960/s26cj096mc4

Identifier-bib

10_3897_zse_100_120676

Identifier-doi

10.3897/zse.100.120676

Issue

2

Ocr

tesseract 5.3.0-6-g76ae

Ocr_detected_lang

en

Ocr_detected_lang_conf

1.0000

Ocr_detected_script

Latin

Ocr_detected_script_conf

1.0000

Ocr_module_version

0.0.21

Ocr_parameters

-l eng

Page_number_confidence

76

Page_number_module_version

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Page_range

583-595

Pages

13

Pdf_degraded

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Pdf_module_version

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Possible copyright status

In copyright. Digitized with the permission of the rights holder.

Ppi

300

Source

Zoosystematics and Evolution 100(2)

Year

2024

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